President Donald Trump said the U.S. will impose an additional 10% tariff on any countries aligning themselves with the "Anti-American policies" of the BRICS group of developing nations, whose leaders kicked off a summit in Brazil on Sunday.

For the first time since taking power, Chinese President Xi Jinping is skipping the BRICS Summit, sending Premier Li Qiang to Rio de Janeiro in his place. Xi’s absence raises questions amid global trade turmoil and U.